In continuation of similar work for

${J}_{\nu}$, the author obtains these derivatives and integrals (from 0 to

$\infty )$ in the form of integrals by differentiating or integrating, respectively, an integral representation of the given functions, or by the Laplace transform method. Results for

${L}_{\nu}$ are obtained from those for

${H}_{\nu}$ by the familiar relation between these two functions. 5S-tables of the associated Volterra function and of some auxiliary integrals are included.